Apparatus and method for display of images
Patent 4028732 Issued on June 7, 1977. Estimated Expiration Date: 
June 7, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 7, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3569616 3573847 3597536 3614312 3654624 3719780 InventorsApplicationNo. 05/657281 filed on 02/11/1976US Classes:358/410, Sync or phase pulse generator347/246, Feedback of light for intensity control347/247, Driving circuitry347/250, Scan synchronization (e.g., start-of-scan, end-of-scan)358/302, Photographic358/471, Picture signal generator358/489, Helical scanning pattern369/116Light intensity adjustment or maintenanceExaminersPrimary: Britton, Howard W.Assistant: Masinick, Michael A. Foreign Application Priority Data1973-03-02 FRAbstractAn image display method and apparatus in which a laser beam is modulated to vary in intensity in response to electric or electromagnetic signals received and is traversed along a photosensitive film carried on a rotating carriage by means of a stepwise driven, friction damped carriage synchronized with respect to the drum rotation, the drum being mounted on magnetic bearings for rotation about a preferably vertical axis. Optionally the modulated beam may be split and a part of the split beam used as a feedback signal controlling the modulation for compensating for the intensity of the beam emerging from the laser. | |
